test: fix the arguments order in assert.strictEqual

PR-URL: https://github.com/nodejs/node/pull/24416
Reviewed-By: Ouyang Yadong <oyydoibh@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/pummel/test-http-many-keep-alive-connections.js

@@ -64,6 +64,6 @@ server.listen(common.PORT, function connect() {
 });
 
 process.on('exit', function() {
-  assert.strictEqual(expected, responses);
-  assert.strictEqual(expected, requests);
+  assert.strictEqual(responses, expected);
+  assert.strictEqual(requests, expected);
 });